Power steering install. 72 c10 sbc - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**mike16** · 11-27-2025, 11:15 AM

Search function does not work for me.

I have a 72 c10 with 307/4 spd

It does not have power steering

I want to put power steering on it. Stock.

First question: Re: water pump pulley and balancer pulley. I've done some window shopping and need a dual pulley set up but cant tell from adds what would fit. Can't figure it out based on advertising hype in various catalogs.

Second question: Re: power steering brackets. Same as a car? What range of years is correct for my 72. Are they reproduced?

Third question: Re: power steering pump. I see two types of pumps. I want the correct one for a 72 c10. Looks like there are two styles of pump early one looks like a bottle and later one is more square looking. Which one is correct for my 72? I've seen both styles mounted on a 72.

I think I may be able to figure out hoses and steering box but maybe not....

Thank you all for your help.

**Sheepdip** · 11-27-2025, 11:28 AM

https://www.speedwaymotors.com/Bills...rt,278993.html

Call Speedway or Summit they can match your pump/pulleys up.

HO455 · 11-27-2025, 03:18 PM

Try dropping a line to member Classic Bowties he may have the OE pieces you want.

**mike16** · 12-26-2025, 11:03 AM

Can I see pictures of a correct for 72 power steering pump?

**mike16** · 12-28-2025, 01:23 PM

Im looking for bracket, pump and pulley pictures. For an original correct application.

Are '72 c10 small block power steering pumps like older ones? They look like a bottle. Or like the newer ones that were squared off looking containers?

Are the power steering pump mounting brackets the same as car ones or different?

And pulleys...

**mike16** · 12-28-2025, 01:25 PM

Quote:

Originally Posted by HO455

Try dropping a line to member Classic Bowties he may have the OE pieces you want.

Can't find him among the members here. Is he a vendor?

HO455 · 12-28-2025, 02:03 PM

Try this. If you want to call him PM me and I will send his number.

https://67-72chevytrucks.com/vboard/member.php?u=26262

SRU1436 · 12-28-2025, 02:11 PM

Quote:

Originally Posted by mike16

Im looking for bracket, pump and pulley pictures. For an original correct application.

Are '72 c10 small block power steering pumps like older ones? They look like a bottle. Or like the newer ones that were squared off looking containers?

Are the power steering pump mounting brackets the same as car ones or different?

And pulleys...

I’ll send you a picture today of OEM set up.

**geunther** · 12-28-2025, 05:30 PM

A couple pics of 72 with original steering.

SRU1436 · 12-28-2025, 07:49 PM

Hopefully this helps.

**mike16** · 01-12-2026, 11:22 AM

First step is to obtain correct two groove pullys for balancer and pump
Summit part number SUM-G3953B
Summit part number SUM-G3951B

about 95$ including tax for the pair.

**mike16** · 01-12-2026, 11:29 AM

I have already replaced the short water pump and added a HD AC/Delco harmonic balancer and timing marker, both from Summit.
I also replaced the cover seal as well.
Im going to regret not replacing the timing chain set and oil pump at this time.
Harmonic balancer from Summit runs about 100$ including tax
The timing pointer thingie, also from Summit goes for about 13$ including tax.

I used the proper harmonic balancer installation tool from Harbor Freight.

The timing mark on the balancer is actually a groove. I filled it with white paint. We'll see how theory transitions into reality.

Thermostat is a 160 degree item also from Summit
The heater hose nipples are from OReilly's

The heater hoses will be factory style reproduction, from Summit as well.

Reproduction tower clamps all around.

**mike16** · 01-17-2026, 03:58 PM

So. In the above image you see a new waterpump. It has a 5/8th inch diameter hub center shaft. I ordered a fan clutch. The fan clutch centers on the hub center shaft. However the fan clutch has a 3/4 inch diameter opening that goes over the water pumps 5/8th diameter centers shaft. So a difference of 1/8th of an inch exists.

A bushing must be installed. If it is not installed the fan will be horribly off center and thus, out of balance.This is unacceptable and undrivable.

The problem is that no such bushing comes with either the pump or any of the 3 fan clutches purchased . Installation instructions state clearly that the bushing must be used.

My past experience is that Hayden fan clutches come with the bushing

I am using a Hayden fan clutch part number 2705.

If you find you don't have the bushing and need it, consider these facts:

Bushing outside diameter is 3/4 of an inch. The inside diameter is 5/8ths of an inch
The depth of the center hole in the fan clutch is 1/2 inch.

I have found a source for these bushings readily available at local hardware store. I found a bronzer bushing 1 inch long for 3.50$.

One last thing to concider: assemble the fan, fan clutch , pulley to the water pump before installing the pump to the block. Otherwise trying to assemble them all together and properly start the fastener is very frustrating. Bolt it all together before mounting the pump

Moving forward

11-27-2025, 11:15 AM	#1
mike16 Senior Member Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,609	Power steering install. 72 c10 sbc Search function does not work for me. I have a 72 c10 with 307/4 spd It does not have power steering I want to put power steering on it. Stock. First question: Re: water pump pulley and balancer pulley. I've done some window shopping and need a dual pulley set up but cant tell from adds what would fit. Can't figure it out based on advertising hype in various catalogs. Second question: Re: power steering brackets. Same as a car? What range of years is correct for my 72. Are they reproduced? Third question: Re: power steering pump. I see two types of pumps. I want the correct one for a 72 c10. Looks like there are two styles of pump early one looks like a bottle and later one is more square looking. Which one is correct for my 72? I've seen both styles mounted on a 72. I think I may be able to figure out hoses and steering box but maybe not.... Thank you all for your help.

11-27-2025, 11:28 AM	#2
Sheepdip Senior Member Join Date: Nov 2018 Location: Waterford California Posts: 2,893	Re: Power steering install. 72 c10 sbc https://www.speedwaymotors.com/Bills...rt,278993.html Call Speedway or Summit they can match your pump/pulleys up.

11-27-2025, 03:18 PM	#3
HO455 Registered User Join Date: Feb 2016 Location: Portland Oregon Posts: 12,410	Re: Power steering install. 72 c10 sbc Try dropping a line to member Classic Bowties he may have the OE pieces you want. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

12-26-2025, 11:03 AM	#4
mike16 Senior Member Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,609	Re: Power steering install. 72 c10 sbc Can I see pictures of a correct for 72 power steering pump?

12-28-2025, 01:23 PM	#5
mike16 Senior Member Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,609	Re: Power steering install. 72 c10 sbc Im looking for bracket, pump and pulley pictures. For an original correct application. Are '72 c10 small block power steering pumps like older ones? They look like a bottle. Or like the newer ones that were squared off looking containers? Are the power steering pump mounting brackets the same as car ones or different? And pulleys...

12-28-2025, 02:03 PM	#7
HO455 Registered User Join Date: Feb 2016 Location: Portland Oregon Posts: 12,410	Re: Power steering install. 72 c10 sbc Try this. If you want to call him PM me and I will send his number. https://67-72chevytrucks.com/vboard/member.php?u=26262 __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

12-28-2025, 05:30 PM	#9
geunther Senior Member Join Date: Apr 2005 Location: Cheyenne, WY Posts: 796	Re: Power steering install. 72 c10 sbc A couple pics of 72 with original steering. Attached Images __________________ The lid is stuck on my jar of anti seize

12-28-2025, 07:49 PM	#10
SRU1436 Registered User Join Date: Mar 2019 Location: San Ramon, CA Posts: 347	Re: Power steering install. 72 c10 sbc Hopefully this helps. Attached Images

01-12-2026, 11:22 AM	#11
mike16 Senior Member Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,609	Re: Power steering install. 72 c10 sbc First step is to obtain correct two groove pullys for balancer and pump Summit part number SUM-G3953B Summit part number SUM-G3951B about 95$ including tax for the pair. Attached Images Last edited by mike16; 01-12-2026 at 12:06 PM.

01-12-2026, 11:29 AM	#12
mike16 Senior Member Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,609	Re: Power steering install. 72 c10 sbc I have already replaced the short water pump and added a HD AC/Delco harmonic balancer and timing marker, both from Summit. I also replaced the cover seal as well. Im going to regret not replacing the timing chain set and oil pump at this time. Harmonic balancer from Summit runs about 100$ including tax The timing pointer thingie, also from Summit goes for about 13$ including tax. I used the proper harmonic balancer installation tool from Harbor Freight. The timing mark on the balancer is actually a groove. I filled it with white paint. We'll see how theory transitions into reality. Thermostat is a 160 degree item also from Summit The heater hose nipples are from OReilly's The heater hoses will be factory style reproduction, from Summit as well. Reproduction tower clamps all around. Attached Images Last edited by mike16; 01-12-2026 at 12:05 PM.

01-17-2026, 03:58 PM	#13
mike16 Senior Member Join Date: Dec 2009 Location: bisbee, arizona Posts: 1,609	Re: Power steering install. 72 c10 sbc So. In the above image you see a new waterpump. It has a 5/8th inch diameter hub center shaft. I ordered a fan clutch. The fan clutch centers on the hub center shaft. However the fan clutch has a 3/4 inch diameter opening that goes over the water pumps 5/8th diameter centers shaft. So a difference of 1/8th of an inch exists. A bushing must be installed. If it is not installed the fan will be horribly off center and thus, out of balance.This is unacceptable and undrivable. The problem is that no such bushing comes with either the pump or any of the 3 fan clutches purchased . Installation instructions state clearly that the bushing must be used. My past experience is that Hayden fan clutches come with the bushing I am using a Hayden fan clutch part number 2705. If you find you don't have the bushing and need it, consider these facts: Bushing outside diameter is 3/4 of an inch. The inside diameter is 5/8ths of an inch The depth of the center hole in the fan clutch is 1/2 inch. I have found a source for these bushings readily available at local hardware store. I found a bronzer bushing 1 inch long for 3.50$. One last thing to concider: assemble the fan, fan clutch , pulley to the water pump before installing the pump to the block. Otherwise trying to assemble them all together and properly start the fastener is very frustrating. Bolt it all together before mounting the pump Moving forward Attached Images



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